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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8834826 B1

PDFFull Text
Date of Patent:
Sep. 16, 2014

Filed:

Jun. 27, 2008

Aggregate of carbon nanotubes, dispersion thereof and conductive film using the same

Applicants:

Kenichi Sato, Nagoya, JP;

Masahito Yoshikawa, Nagoya, JP;

Naoyo Okamoto, Nagoya, JP;

Shuko Numata, Nagoya, JP;

Inventors:

Kenichi Sato, Nagoya, JP;

Masahito Yoshikawa, Nagoya, JP;

Naoyo Okamoto, Nagoya, JP;

Shuko Numata, Nagoya, JP;

Assignee:

TORAY Industries, Inc., Tokyo, JP;

Attorney:

Kubovcik & Kubovcik

Primary Examiner:

Daniel C McCracken

Int. Cl.
CPC ...
D01F 9/12 (2006.01); C08J 7/06 (2006.01); C09D 7/12 (2006.01); C08J 7/04 (2006.01); B82Y 30/00 (2011.01); H01B 1/12 (2006.01); C09D 5/24 (2006.01); B82Y 40/00 (2011.01); C01B 31/02 (2006.01); H01B 1/04 (2006.01); H01J 1/304 (2006.01); H01B 1/24 (2006.01); C08K 3/04 (2006.01);
U.S. Cl.
CPC ...
D01F 9/12 (2013.01); C08J 7/06 (2013.01); C09D 7/1291 (2013.01); C08J 7/047 (2013.01); C08J 2400/12 (2013.01); B82Y 30/00 (2013.01); H01B 1/128 (2013.01); C01B 2202/06 (2013.01); C01B 2202/28 (2013.01); C09D 5/24 (2013.01); B82Y 40/00 (2013.01); C01B 31/0273 (2013.01); H01B 1/04 (2013.01); C08J 2367/02 (2013.01); H01J 2201/30469 (2013.01); H01J 1/304 (2013.01); C08K 3/04 (2013.01); H01B 1/24 (2013.01);
Abstract

Provided is an aggregate of carbon nanotubes satisfying (1) there is a 2θ peak at 24°±2° by X-ray powder diffraction analysis; (2) a height ratio (G/D ratio) of G band to D band by Raman spectroscopic analysis of wavelength 532 nm is 30 or more; and (3) a combustion peak temperature is from 550° C. to 700° C. The present invention provides an aggregate of carbon nanotubes excellent in dispersibility while high quality, giving a film, molded article, membrane or the like having excellent characteristics.

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